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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?7iYDcAbxKmvDhAbpUaSSU+gSxpOMGkG4UWhrzLIW1Po0w2nsQP/FopzILuB5?= =?us-ascii?Q?Gw5Ua9SQ13WuBXfKlKTTY9HMsL6gfDR/9kF+2dJn+SSgVeAkUATZ10IzKDwM?= =?us-ascii?Q?ohf+0LMaV2i9zPnF7dfl6LJvFuRkfOoE5Vfi+rqqiLVEePekKjOIhrT/cX8P?= =?us-ascii?Q?7f9+109zjxXokVsxQ7cI3RWSV7AiBgDmXmZs1AxM4BRGxj0sWxtj/aTccQUa?= =?us-ascii?Q?fVSOb+HvNTPPwJNFbFlnTTnYYvbaJolKuaXCK6EvU+Qt3fVE2ntG91yOXidT?= =?us-ascii?Q?zEWNg7X7d7ZrJPfVixNRpoHR72XttGlTjQRAtssWR6QY2o0B9UcdOe45Y/jr?= =?us-ascii?Q?FY0MvjfqlqU+YVd5quKGyYAgYVfEitAlFUZNbkTVO55L8dZD2YdNmI5rfz91?= =?us-ascii?Q?llqvFOBeJWjtahBVD16gk0GCnR88NpdN4lbZmPZAa2/2uGSB5qW5gllYn+JE?= =?us-ascii?Q?eQRkCtiFBQpyHkDmvOEH5XF8iDB3RpGYh6cGOlROrN7Ng/ZejOGUVbDGszzS?= =?us-ascii?Q?KNF9U9AjCOjZLxAZRSyg8u9Myu1VALjA8HmDQiRloT2t4JMHtm3uDtnwf4r7?= =?us-ascii?Q?I+QNabI1LDA4XB2lD8Ic0E+OftrFIvHLUumIo40Ed78/E621oJslDH+O+4J6?= =?us-ascii?Q?5sMgGOO3FYp8uTo/vJuMvm9s7Mx1mRrMq5gJJU3CokkjN4ru+mbshHGKb6e9?= =?us-ascii?Q?ltnRw/sBtjhR7cue4gQvP7KRbYkCREk8vLDt90KLBLtSbriW/xM7VEDehrZe?= =?us-ascii?Q?RUdoQR4vAf6nNu1OEE3tv7RalF+QjjQt30K9a69NZirY3Vhym4jcNP9xcK4V?= =?us-ascii?Q?BWDuluEwTcDI10KoTelhtuWdlBCYSFqtEDLJBjDGbzMlyIHdkt3YoYLxa0dD?= =?us-ascii?Q?EBouNn8+m99n3SAccFGlgmXxP++dPE4arieKabrqr5XrLJ7RKxZyrEn5c69x?= =?us-ascii?Q?PfQG8rJKY4ovy4zPEJWmE6Lvx5wggW5U/WTkmoQ8KakWSKsAqa8+ct7gtGvA?= =?us-ascii?Q?IYfToi1l3R+28zahjJryp7fkrXMM5HC7ZA3YDsTM6h4xBm4CbhD9HtM/u75X?= =?us-ascii?Q?b7AQRSspw1xXttypPqvZ/I742e8ZgUjNkIggNydHdc3xYJEHHU7prisvbDCx?= =?us-ascii?Q?XbXSuipvY6NAQwopplqSxHbeCo2Wj3LoX5CEgOAMyPmiMKS3Ae2ZmfR25Mzf?= =?us-ascii?Q?uSAVd1JAE9koSKDlc4Fvif9VrK9EEhwspo76/cAe0W23kNm2vRQ+gE6Mj4gh?= =?us-ascii?Q?jmOC3j7Z5lTsgU+OGbMq6NdUE8zq+QS+qpuP1lp+sQqoBXs2IMwxoa9XV0pZ?= =?us-ascii?Q?/ATVfsp+nGZaYQU0Linddv2mDnZFOsb56/UAQVcMpJ6icy6ZsndNJg2Ija+Z?= =?us-ascii?Q?gg0obCoquDKCLV+JTDeXKI3oxxJsakh3G9yS4nT28MBl3LLv/gE2y4CBeswr?= =?us-ascii?Q?VBImmQvq1jz2HdkJWiGSC7QAqb2SGHrnqeMQ17JuVjVjhoCOYBXisRu6Tl4+?= =?us-ascii?Q?GlTL4jz1VkfRiqZNwGxBRSunR/aOEsU1N6j7Kr7Kdc3imio6F9O0A9KDRUKw?= =?us-ascii?Q?7UEm1Y0JLc/nx88rDkQb/OkwI9AoVvRiqwxkpCBxHGtxQkBwPaOYf1hLejjC?= =?us-ascii?Q?jOPsvLowpoMVEmtkDavWtZuNzTgZweVzPX2liEyWkvHX5ngMxJUzNA4bvbrY?= =?us-ascii?Q?U7MBYL+wzqPSNQ5SBTG0ILMS/hZXMuhQuitpI9dFYR5HTXVGQ7ya/U0Q4W1e?= =?us-ascii?Q?xwcswkESvw=3D=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4ea518c7-1e45-4334-cad5-08df2d7470ad X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB7742.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2026 00:03:44.1395 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: wQUWpqfdJgUdjLBLuoF3SechQj8FSldyubCqPjOEVn91vmfN5ZEZcXoJUmFtGhd+gaTAr2IZtx28iu6T6ZrfUw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6171 On Fri, Oct 16, 2026 at 11:54:39PM +0000, Zqiang wrote: > > > > On 10/13/26 11:31 PM, Yonghao Zhang wrote: > > > > > > > > The sample "kthread starved" splat in stallwarn.rst shows > > > RCU_GP_WAIT_FQS(3), which was correct when the example was captured, > > > but has been stale since commit fea3f222d352 ("rcu: Record ->gp_state > > > for both phases of grace-period initialization") inserted > > > RCU_GP_ONOFF (3) and RCU_GP_INIT (4) ahead of it, shifting > > > RCU_GP_WAIT_FQS from 3 to 5. > > > > > > Update the sample output to show (5), matching the current tree.h > > > values and the later "kthread timer wakeup" example in the same file. > > > > > > Fixes: fea3f222d352 ("rcu: Record ->gp_state for both phases of grace-period initialization") > > > Signed-off-by: Yonghao Zhang > > > > > Acked-by: Randy Dunlap > > Reviewed-by: Zqiang Applying for 7.5 with the tags, thank you! Joel Fernandes > > Thanks > Zqiang > > > Thanks. > > > > > > > > --- > > > Documentation/RCU/stallwarn.rst | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/Documentation/RCU/stallwarn.rst b/Documentation/RCU/stallwarn.rst > > > index b888e13c02a4..049694b9c681 100644 > > > --- a/Documentation/RCU/stallwarn.rst > > > +++ b/Documentation/RCU/stallwarn.rst > > > @@ -379,7 +379,7 @@ If the relevant grace-period kthread has been unable to run prior to > > > the stall warning, as was the case in the "All QSes seen" line above, > > > the following additional line is printed:: > > > > > > - rcu_sched kthread starved for 23807 jiffies! g7075 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1 ->cpu=5 > > > + rcu_sched kthread starved for 23807 jiffies! g7075 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x1 ->cpu=5 > > > Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior. > > > > > > Starving the grace-period kthreads of CPU time can of course result > > > > > -- > > ~Randy > >